Network Engineer L2 (Routing and Switching)

NTT DATA SERVICES SINGAPORE PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

NTT DATA SERVICES SINGAPORE PTE. LTD. is seeking an experienced network engineer to lead and support enterprise data center projects focused on Cisco ACI, routing, switching, wireless, and firewall integration.

You will drive migration plans, validate performance, and ensure compliance in a demanding 24x7 environment. The role requires collaboration with project managers and cross-functional teams, ownership of escalated tickets in ServiceNow, adherence to ITIL processes, and willingness to

Qualifications

• 6+ years managing LAN/WAN infrastructures and data center networks.
• 3+ years with Palo Alto firewalls and Cisco ACI experience.
• Strong understanding of routing, switching, and wireless technologies.

Responsibilities

• Design, implement, and support Cisco ACI network components to optimise data center performance.
• Develop migration plans from traditional networks to Cisco ACI environments.
• Integrate service appliances like Palo Alto firewalls and ADCs into ACI deployments.
• Analyze inter-tenant traffic and ensure secure network segmentation.
• Configure L2/L3 connectivity and VMM integration in data center networks.
• Manage routing, switching, WLAN/WAN infra using EIGRP, OSPF, BGP and IEEE 802.11 standards.
• Ensure configurations comply with standards and monitor logs for health.
• Lead on-call support, manage queues, and contribute to 24x7 operations.

Skills

Cisco ACI

Data center networking

LAN/WAN

Routing & Switching

Firewalls

Tools

ServiceNow

ITIL

Job description

Job Summary

Lead and support enterprise network infrastructure projects focusing on Cisco ACI, routing, switching, wireless, and firewalls. Drive migration plans, integrate service appliances, and ensure network performance and compliance in a 24x7 environment.

Responsibilities

• Design, implement, and support Cisco ACI network architecture components to optimize data center network performance
• Develop and execute migration plans from traditional data center network designs to Cisco ACI environments
• Integrate service appliances such as Application Delivery Controllers and Palo Alto firewalls into Cisco ACI deployments
• Analyze and manage inter-tenant and intra-tenant traffic flows and contracts to ensure secure and efficient network segmentation
• Configure and troubleshoot L2 outs, L3 outs, and VMM integration within data center networks
• Manage routing, switching, wireless LAN/WAN infrastructure using protocols including EIGRP, OSPF, BGP, and standards such as IEEE 802.11a, 802.1x, STP, MSTP, RSTP, HSRP, and VRRP
• Ensure all network configurations comply with established standards and review log files for network health monitoring
• Deploy, maintain, and troubleshoot enterprise-level, mission-critical network infrastructure components including SD-WAN and wireless systems
• Collaborate with project managers and cross-functional teams to deliver successful network projects aligned with business objectives
• Own and resolve escalated support tickets and service requests using ServiceNow, documenting all actions and outcomes
• Apply ITIL and Change Management processes to maintain network stability and service quality
• Communicate effectively with customers, end users, partners, and associates to provide excellent customer service and technical support
• Adapt to changing environments, work independently, and demonstrate flexibility including willingness to travel as required
• Participate in rotating on-call support, manage support queues, and perform network system analysis and reporting in a 24x7 operational setting

Required competencies and certifications

• Minimum 6 years managing LAN and WAN infrastructures
• Minimum 6 years experience in routing, switching, Riverbed, and wireless technologies
• Minimum 3 years experience with Palo Alto firewall technologies
• Minimum 3 years experience working with Cisco ACI